"The sun has unleashed its more powerful explosion in four years.
So violent was the eruption - known as an X-class flare, the strongest type - it could interfere with
- communications on Earth.
The blast took place at 1.56am on Tuesday and was the largest so far in the new solar cycle....
A conference last year on the vulnerability of electricity grids around the world heard how massive a solar flare
- could trigger global chaos in 2013, causing blackouts and wrecking satellite communications.
- more economic damage than Hurricane Katrina.
The resulting solar storm could cause a geomagnetic storm on Earth, knocking out electricity grids around the world for hours, days, or even months, bringing much of normal life grinding to a halt....
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